| 1. |
- Amati, M., et al.
(author)
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Scanning photoelectron spectromicroscopy : From static to operando studies of functional materials
- 2023
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In: Journal of Electron Spectroscopy and Related Phenomena. - 0368-2048. ; 265
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Journal article (peer-reviewed)abstract
- The scanning photoelectron microscope (SPEM), developed more than 30 years ago, has undergone numerous technical developments, providing an incredibly vast kind of feasible sample environments, which span from the traditional high spatial resolution core level based chemical analysis to insitu and operando complex experiments, including also electrochemical setups and operational electronic devices at various temperatures. Another important step ahead is overcoming the so-called pressure gap for operando studies, recently extended to near ambient values by building special environmental cells. Using recent results of conventional and unconventional experiments, obtained with SPEM at the ESCA Microscopy beamline at Elettra Sincrotrone Trieste the present review demonstrates the current potential of this type of photoelectron spectromicroscopy to explore the interfacial properties of functional materials with high spatial resolution.
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| 2. |
- Basagni, Andrea, et al.
(author)
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On-surface photo-dissociation of C-Br bonds: towards room temperature Ullmann coupling
- 2015
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In: Chemical Communications. - : Royal Society of Chemistry (RSC). - 1364-548X .- 1359-7345. ; 51:63, s. 12593-12596
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Journal article (peer-reviewed)abstract
- The surface-assisted synthesis of gold-organometallic hybrids on the Au(111) surface both by thermo-and light-initiated dehalogenation of bromo-substituted tetracene is reported. Combined X-ray photoemission (XPS) and scanning tunneling microscopy (STM) data reveal a significant increase of the surface order when mild reaction conditions are combined with 405 nm light irradiation.
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| 3. |
- Garoli, Denis, et al.
(author)
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Hybrid plasmonic nanostructures based on controlled integration of MoS2 flakes on metallic nanoholes
- 2018
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In: Nanoscale. - : Royal Society of Chemistry. - 2040-3364 .- 2040-3372. ; 10:36, s. 17105-17111
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Journal article (peer-reviewed)abstract
- Here, we propose an easy and robust strategy for the versatile preparation of hybrid plasmonic nanopores by means of controlled deposition of single flakes of MoS2 directly on top of metallic holes. The device is realized on silicon nitride membranes and can be further refined by TEM or FIB milling to achieve the passing of molecules or nanometric particles through a pore. Importantly, we show that the plasmonic enhancement provided by the nanohole is strongly accumulated in the 2D nanopore, thus representing an ideal system for single-molecule sensing and sequencing in a flow-through configuration. Here, we also demonstrate that the prepared 2D material can be decorated with metallic nanoparticles that can couple their resonance with the nanopore resonance to further enhance the electromagnetic field confinement at the nanoscale level. This method can be applied to any gold nanopore with a high level of reproducibility and parallelization; hence, it can pave the way to the next generation of solid-state nanopores with plasmonic functionalities. Moreover, the controlled/ordered integration of 2D materials on plasmonic nanostructures opens a pathway towards new investigation of the following: enhanced light emission; strong coupling from plasmonic hybrid structures; hot electron generation; and sensors in general based on 2D materials.
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| 4. |
- Mosconi, Dario, et al.
(author)
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Electrophoretic Deposition of WS2 Flakes on Nanoholes Arrays—Role of Used Suspension Medium
- 2019
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In: Materials. - : MDPI AG. - 1996-1944. ; 12:20, s. 3286-3286
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Journal article (peer-reviewed)abstract
- Here we optimized the electrophoretic deposition process for the fabrication of WS2 plasmonic nanohole integrated structures. We showed how the conditions used for site-selective deposition influenced the properties of the deposited flakes. In particular, we investigated the effect of different suspension buffers used during the deposition both in the efficiency of the process and in the stability of WS2 flakes, which were deposited on an ordered arrays of plasmonic nanostructures. We observed that a proper buffer can significantly facilitate the deposition process, keeping the material stable with respect to oxidation and contamination. Moreover, the integrated plasmonic structures that can be prepared with this process can be applied to enhanced spectroscopies and for the preparation of 2D nanopores.
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| 5. |
- Mosconi, Dario, et al.
(author)
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Site-Selective Integration of MoS2 Flakes on Nanopores by Means of Electrophoretic Deposition
- 2019
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In: ACS Omega. - : American Chemical Society (ACS). - 2470-1343. ; 4:5, s. 9294-9300
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Journal article (peer-reviewed)abstract
- Here, we propose an easy method for site-selective deposition of two-dimensional (2D) material flakes onto nanoholes by means of electrophoretic deposition. This method can be applied to both simple flat nanostructures and complex three-dimensional structures incorporating nanoholes. The deposition method is here used for the decoration of large ordered arrays of plasmonic structures with either a single or few layers of MoS2. In principle, the plasmonic field generated by the nanohole can significantly interact with the 2D layer leading to enhanced light–material interaction. This makes our platform an ideal system for hybrid 2D material/plasmonic investigations. The engineered deposition of 2D materials on plasmonic nanostructures is useful for several important applications such as enhanced light emission, strong coupling, hot-electron generation, and 2D material sensors.
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